Ultrafast proton-assisted tunneling through ZrO2 in dye-sensitized SnO2-core/ZrO2-shell films

John R. Swierk, Nicholas S. McCool, Jason A. Röhr, Svante Hedström, Steven J. Konezny, Coleen T. Nemes, Pengtao Xu, Victor S. Batista, Thomas E. Mallouk, Charles A. Schmuttenmaer

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Core-shell architectures are used to modulate injection and recombination in dye-sensitized photoelectrochemical cells. Here, we demonstrate that exposing SnO2-core/ZrO2-shell films to acid permits photoinduced electron transfer through ZrO2-shells at least 4 nm thick. A novel mechanism of charge transfer is proposed where protonic defects permit ultrafast trap-assisted tunneling of electrons.

Original languageEnglish (US)
Pages (from-to)7971-7974
Number of pages4
JournalChemical Communications
Issue number57
StatePublished - 2018

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry


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